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# Copyright (C) 2005-2011 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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revision as _mod_revision,
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testament as _mod_testament,
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from bzrlib.bundle import serializer
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from bzrlib.i18n import gettext
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from bzrlib.decorators import needs_read_lock, needs_write_lock, only_raises
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from bzrlib.inter import InterObject
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from bzrlib.lock import _RelockDebugMixin, LogicalLockResult
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from bzrlib.trace import (
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log_exception_quietly, note, mutter, mutter_callsite, warning)
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# Old formats display a warning, but only once
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_deprecation_warning_done = False
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class IsInWriteGroupError(errors.InternalBzrError):
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_fmt = "May not refresh_data of repo %(repo)s while in a write group."
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def __init__(self, repo):
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errors.InternalBzrError.__init__(self, repo=repo)
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class CommitBuilder(object):
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"""Provides an interface to build up a commit.
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This allows describing a tree to be committed without needing to
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know the internals of the format of the repository.
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# all clients should supply tree roots.
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record_root_entry = True
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# whether this commit builder supports the record_entry_contents interface
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supports_record_entry_contents = False
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def __init__(self, repository, parents, config, timestamp=None,
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timezone=None, committer=None, revprops=None,
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revision_id=None, lossy=False):
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"""Initiate a CommitBuilder.
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:param repository: Repository to commit to.
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:param parents: Revision ids of the parents of the new revision.
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:param timestamp: Optional timestamp recorded for commit.
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:param timezone: Optional timezone for timestamp.
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:param committer: Optional committer to set for commit.
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:param revprops: Optional dictionary of revision properties.
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:param revision_id: Optional revision id.
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:param lossy: Whether to discard data that can not be natively
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represented, when pushing to a foreign VCS
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self._committer = self._config.username()
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elif not isinstance(committer, unicode):
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self._committer = committer.decode() # throw if non-ascii
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self._committer = committer
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self._new_revision_id = revision_id
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self.parents = parents
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self.repository = repository
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if revprops is not None:
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self._validate_revprops(revprops)
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self._revprops.update(revprops)
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if timestamp is None:
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timestamp = time.time()
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# Restrict resolution to 1ms
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self._timestamp = round(timestamp, 3)
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self._timezone = osutils.local_time_offset()
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self._timezone = int(timezone)
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self._generate_revision_if_needed()
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def any_changes(self):
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"""Return True if any entries were changed.
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This includes merge-only changes. It is the core for the --unchanged
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:return: True if any changes have occured.
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raise NotImplementedError(self.any_changes)
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def _validate_unicode_text(self, text, context):
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"""Verify things like commit messages don't have bogus characters."""
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raise ValueError('Invalid value for %s: %r' % (context, text))
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def _validate_revprops(self, revprops):
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for key, value in revprops.iteritems():
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# We know that the XML serializers do not round trip '\r'
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# correctly, so refuse to accept them
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if not isinstance(value, basestring):
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raise ValueError('revision property (%s) is not a valid'
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' (unicode) string: %r' % (key, value))
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self._validate_unicode_text(value,
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'revision property (%s)' % (key,))
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def commit(self, message):
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"""Make the actual commit.
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:return: The revision id of the recorded revision.
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raise NotImplementedError(self.commit)
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"""Abort the commit that is being built.
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raise NotImplementedError(self.abort)
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def revision_tree(self):
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"""Return the tree that was just committed.
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After calling commit() this can be called to get a
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RevisionTree representing the newly committed tree. This is
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preferred to calling Repository.revision_tree() because that may
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require deserializing the inventory, while we already have a copy in
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raise NotImplementedError(self.revision_tree)
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def finish_inventory(self):
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"""Tell the builder that the inventory is finished.
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:return: The inventory id in the repository, which can be used with
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repository.get_inventory.
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raise NotImplementedError(self.finish_inventory)
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def _gen_revision_id(self):
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"""Return new revision-id."""
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return generate_ids.gen_revision_id(self._committer, self._timestamp)
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def _generate_revision_if_needed(self):
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"""Create a revision id if None was supplied.
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If the repository can not support user-specified revision ids
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they should override this function and raise CannotSetRevisionId
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if _new_revision_id is not None.
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:raises: CannotSetRevisionId
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if self._new_revision_id is None:
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self._new_revision_id = self._gen_revision_id()
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self.random_revid = True
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self.random_revid = False
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def will_record_deletes(self):
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"""Tell the commit builder that deletes are being notified.
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This enables the accumulation of an inventory delta; for the resulting
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commit to be valid, deletes against the basis MUST be recorded via
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builder.record_delete().
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raise NotImplementedError(self.will_record_deletes)
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def record_iter_changes(self, tree, basis_revision_id, iter_changes):
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"""Record a new tree via iter_changes.
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:param tree: The tree to obtain text contents from for changed objects.
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:param basis_revision_id: The revision id of the tree the iter_changes
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has been generated against. Currently assumed to be the same
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as self.parents[0] - if it is not, errors may occur.
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:param iter_changes: An iter_changes iterator with the changes to apply
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to basis_revision_id. The iterator must not include any items with
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a current kind of None - missing items must be either filtered out
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or errored-on beefore record_iter_changes sees the item.
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:return: A generator of (file_id, relpath, fs_hash) tuples for use with
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raise NotImplementedError(self.record_iter_changes)
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class RepositoryWriteLockResult(LogicalLockResult):
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"""The result of write locking a repository.
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:ivar repository_token: The token obtained from the underlying lock, or
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:ivar unlock: A callable which will unlock the lock.
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def __init__(self, unlock, repository_token):
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LogicalLockResult.__init__(self, unlock)
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self.repository_token = repository_token
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return "RepositoryWriteLockResult(%s, %s)" % (self.repository_token,
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######################################################################
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class Repository(_RelockDebugMixin, controldir.ControlComponent):
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"""Repository holding history for one or more branches.
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The repository holds and retrieves historical information including
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revisions and file history. It's normally accessed only by the Branch,
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which views a particular line of development through that history.
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See VersionedFileRepository in bzrlib.vf_repository for the
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base class for most Bazaar repositories.
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def abort_write_group(self, suppress_errors=False):
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"""Commit the contents accrued within the current write group.
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:param suppress_errors: if true, abort_write_group will catch and log
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unexpected errors that happen during the abort, rather than
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allowing them to propagate. Defaults to False.
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:seealso: start_write_group.
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if self._write_group is not self.get_transaction():
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# has an unlock or relock occured ?
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'(suppressed) mismatched lock context and write group. %r, %r',
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self._write_group, self.get_transaction())
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raise errors.BzrError(
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'mismatched lock context and write group. %r, %r' %
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(self._write_group, self.get_transaction()))
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self._abort_write_group()
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except Exception, exc:
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self._write_group = None
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if not suppress_errors:
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mutter('abort_write_group failed')
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log_exception_quietly()
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note(gettext('bzr: ERROR (ignored): %s'), exc)
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self._write_group = None
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def _abort_write_group(self):
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"""Template method for per-repository write group cleanup.
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This is called during abort before the write group is considered to be
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finished and should cleanup any internal state accrued during the write
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group. There is no requirement that data handed to the repository be
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*not* made available - this is not a rollback - but neither should any
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attempt be made to ensure that data added is fully commited. Abort is
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invoked when an error has occured so futher disk or network operations
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may not be possible or may error and if possible should not be
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def add_fallback_repository(self, repository):
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"""Add a repository to use for looking up data not held locally.
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:param repository: A repository.
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raise NotImplementedError(self.add_fallback_repository)
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def _check_fallback_repository(self, repository):
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"""Check that this repository can fallback to repository safely.
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Raise an error if not.
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:param repository: A repository to fallback to.
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return InterRepository._assert_same_model(self, repository)
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def all_revision_ids(self):
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"""Returns a list of all the revision ids in the repository.
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This is conceptually deprecated because code should generally work on
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the graph reachable from a particular revision, and ignore any other
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revisions that might be present. There is no direct replacement
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if 'evil' in debug.debug_flags:
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mutter_callsite(2, "all_revision_ids is linear with history.")
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return self._all_revision_ids()
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def _all_revision_ids(self):
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"""Returns a list of all the revision ids in the repository.
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These are in as much topological order as the underlying store can
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raise NotImplementedError(self._all_revision_ids)
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def break_lock(self):
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"""Break a lock if one is present from another instance.
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Uses the ui factory to ask for confirmation if the lock may be from
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self.control_files.break_lock()
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def create(a_bzrdir):
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"""Construct the current default format repository in a_bzrdir."""
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return RepositoryFormat.get_default_format().initialize(a_bzrdir)
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def __init__(self, _format, a_bzrdir, control_files):
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"""instantiate a Repository.
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:param _format: The format of the repository on disk.
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:param a_bzrdir: The BzrDir of the repository.
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:param control_files: Control files to use for locking, etc.
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# In the future we will have a single api for all stores for
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# getting file texts, inventories and revisions, then
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# this construct will accept instances of those things.
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super(Repository, self).__init__()
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self._format = _format
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# the following are part of the public API for Repository:
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self.bzrdir = a_bzrdir
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self.control_files = control_files
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self._write_group = None
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# Additional places to query for data.
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self._fallback_repositories = []
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def user_transport(self):
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return self.bzrdir.user_transport
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def control_transport(self):
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return self._transport
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if self._fallback_repositories:
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return '%s(%r, fallback_repositories=%r)' % (
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self.__class__.__name__,
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self._fallback_repositories)
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return '%s(%r)' % (self.__class__.__name__,
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def _has_same_fallbacks(self, other_repo):
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"""Returns true if the repositories have the same fallbacks."""
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my_fb = self._fallback_repositories
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other_fb = other_repo._fallback_repositories
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if len(my_fb) != len(other_fb):
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for f, g in zip(my_fb, other_fb):
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if not f.has_same_location(g):
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def has_same_location(self, other):
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"""Returns a boolean indicating if this repository is at the same
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location as another repository.
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This might return False even when two repository objects are accessing
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the same physical repository via different URLs.
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if self.__class__ is not other.__class__:
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return (self.control_url == other.control_url)
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def is_in_write_group(self):
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"""Return True if there is an open write group.
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:seealso: start_write_group.
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return self._write_group is not None
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return self.control_files.is_locked()
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def is_write_locked(self):
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"""Return True if this object is write locked."""
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return self.is_locked() and self.control_files._lock_mode == 'w'
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def lock_write(self, token=None):
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"""Lock this repository for writing.
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This causes caching within the repository obejct to start accumlating
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data during reads, and allows a 'write_group' to be obtained. Write
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groups must be used for actual data insertion.
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A token should be passed in if you know that you have locked the object
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some other way, and need to synchronise this object's state with that
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XXX: this docstring is duplicated in many places, e.g. lockable_files.py
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:param token: if this is already locked, then lock_write will fail
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unless the token matches the existing lock.
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:returns: a token if this instance supports tokens, otherwise None.
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:raises TokenLockingNotSupported: when a token is given but this
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instance doesn't support using token locks.
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:raises MismatchedToken: if the specified token doesn't match the token
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of the existing lock.
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:seealso: start_write_group.
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:return: A RepositoryWriteLockResult.
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locked = self.is_locked()
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token = self.control_files.lock_write(token=token)
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self._warn_if_deprecated()
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for repo in self._fallback_repositories:
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# Writes don't affect fallback repos
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return RepositoryWriteLockResult(self.unlock, token)
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"""Lock the repository for read operations.
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:return: An object with an unlock method which will release the lock
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locked = self.is_locked()
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self.control_files.lock_read()
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self._warn_if_deprecated()
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for repo in self._fallback_repositories:
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return LogicalLockResult(self.unlock)
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def get_physical_lock_status(self):
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return self.control_files.get_physical_lock_status()
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def leave_lock_in_place(self):
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"""Tell this repository not to release the physical lock when this
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If lock_write doesn't return a token, then this method is not supported.
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self.control_files.leave_in_place()
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def dont_leave_lock_in_place(self):
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"""Tell this repository to release the physical lock when this
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object is unlocked, even if it didn't originally acquire it.
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If lock_write doesn't return a token, then this method is not supported.
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self.control_files.dont_leave_in_place()
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def gather_stats(self, revid=None, committers=None):
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"""Gather statistics from a revision id.
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:param revid: The revision id to gather statistics from, if None, then
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no revision specific statistics are gathered.
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:param committers: Optional parameter controlling whether to grab
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a count of committers from the revision specific statistics.
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:return: A dictionary of statistics. Currently this contains:
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committers: The number of committers if requested.
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firstrev: A tuple with timestamp, timezone for the penultimate left
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most ancestor of revid, if revid is not the NULL_REVISION.
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latestrev: A tuple with timestamp, timezone for revid, if revid is
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not the NULL_REVISION.
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revisions: The total revision count in the repository.
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size: An estimate disk size of the repository in bytes.
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if revid and committers:
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result['committers'] = 0
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if revid and revid != _mod_revision.NULL_REVISION:
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graph = self.get_graph()
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all_committers = set()
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revisions = [r for (r, p) in graph.iter_ancestry([revid])
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if r != _mod_revision.NULL_REVISION]
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# ignore the revisions in the middle - just grab first and last
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revisions = revisions[0], revisions[-1]
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for revision in self.get_revisions(revisions):
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if not last_revision:
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last_revision = revision
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all_committers.add(revision.committer)
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first_revision = revision
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result['committers'] = len(all_committers)
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result['firstrev'] = (first_revision.timestamp,
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first_revision.timezone)
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result['latestrev'] = (last_revision.timestamp,
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last_revision.timezone)
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def find_branches(self, using=False):
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"""Find branches underneath this repository.
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This will include branches inside other branches.
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:param using: If True, list only branches using this repository.
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if using and not self.is_shared():
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return self.bzrdir.list_branches()
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class Evaluator(object):
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self.first_call = True
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def __call__(self, bzrdir):
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# On the first call, the parameter is always the bzrdir
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# containing the current repo.
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if not self.first_call:
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repository = bzrdir.open_repository()
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except errors.NoRepositoryPresent:
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return False, ([], repository)
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self.first_call = False
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value = (bzrdir.list_branches(), None)
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for branches, repository in bzrdir.BzrDir.find_bzrdirs(
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self.user_transport, evaluate=Evaluator()):
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if branches is not None:
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if not using and repository is not None:
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ret.extend(repository.find_branches())
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def search_missing_revision_ids(self, other,
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revision_id=symbol_versioning.DEPRECATED_PARAMETER,
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find_ghosts=True, revision_ids=None, if_present_ids=None,
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"""Return the revision ids that other has that this does not.
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These are returned in topological order.
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revision_id: only return revision ids included by revision_id.
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if symbol_versioning.deprecated_passed(revision_id):
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symbol_versioning.warn(
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'search_missing_revision_ids(revision_id=...) was '
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'deprecated in 2.4. Use revision_ids=[...] instead.',
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DeprecationWarning, stacklevel=3)
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if revision_ids is not None:
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raise AssertionError(
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'revision_ids is mutually exclusive with revision_id')
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if revision_id is not None:
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revision_ids = [revision_id]
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return InterRepository.get(other, self).search_missing_revision_ids(
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find_ghosts=find_ghosts, revision_ids=revision_ids,
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if_present_ids=if_present_ids, limit=limit)
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"""Open the repository rooted at base.
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For instance, if the repository is at URL/.bzr/repository,
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Repository.open(URL) -> a Repository instance.
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control = bzrdir.BzrDir.open(base)
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return control.open_repository()
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def copy_content_into(self, destination, revision_id=None):
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"""Make a complete copy of the content in self into destination.
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This is a destructive operation! Do not use it on existing
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return InterRepository.get(self, destination).copy_content(revision_id)
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def commit_write_group(self):
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"""Commit the contents accrued within the current write group.
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:seealso: start_write_group.
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:return: it may return an opaque hint that can be passed to 'pack'.
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if self._write_group is not self.get_transaction():
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# has an unlock or relock occured ?
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raise errors.BzrError('mismatched lock context %r and '
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(self.get_transaction(), self._write_group))
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result = self._commit_write_group()
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self._write_group = None
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def _commit_write_group(self):
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"""Template method for per-repository write group cleanup.
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This is called before the write group is considered to be
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finished and should ensure that all data handed to the repository
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for writing during the write group is safely committed (to the
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extent possible considering file system caching etc).
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def suspend_write_group(self):
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raise errors.UnsuspendableWriteGroup(self)
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def refresh_data(self):
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"""Re-read any data needed to synchronise with disk.
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This method is intended to be called after another repository instance
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(such as one used by a smart server) has inserted data into the
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repository. On all repositories this will work outside of write groups.
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Some repository formats (pack and newer for bzrlib native formats)
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support refresh_data inside write groups. If called inside a write
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group on a repository that does not support refreshing in a write group
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IsInWriteGroupError will be raised.
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def resume_write_group(self, tokens):
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if not self.is_write_locked():
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raise errors.NotWriteLocked(self)
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if self._write_group:
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raise errors.BzrError('already in a write group')
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self._resume_write_group(tokens)
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# so we can detect unlock/relock - the write group is now entered.
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self._write_group = self.get_transaction()
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def _resume_write_group(self, tokens):
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raise errors.UnsuspendableWriteGroup(self)
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def fetch(self, source, revision_id=None, find_ghosts=False,
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"""Fetch the content required to construct revision_id from source.
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If revision_id is None and fetch_spec is None, then all content is
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fetch() may not be used when the repository is in a write group -
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either finish the current write group before using fetch, or use
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fetch before starting the write group.
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:param find_ghosts: Find and copy revisions in the source that are
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ghosts in the target (and not reachable directly by walking out to
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the first-present revision in target from revision_id).
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:param revision_id: If specified, all the content needed for this
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revision ID will be copied to the target. Fetch will determine for
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itself which content needs to be copied.
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:param fetch_spec: If specified, a SearchResult or
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PendingAncestryResult that describes which revisions to copy. This
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allows copying multiple heads at once. Mutually exclusive with
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if fetch_spec is not None and revision_id is not None:
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raise AssertionError(
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"fetch_spec and revision_id are mutually exclusive.")
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if self.is_in_write_group():
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raise errors.InternalBzrError(
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"May not fetch while in a write group.")
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# fast path same-url fetch operations
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# TODO: lift out to somewhere common with RemoteRepository
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# <https://bugs.launchpad.net/bzr/+bug/401646>
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if (self.has_same_location(source)
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and fetch_spec is None
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and self._has_same_fallbacks(source)):
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# check that last_revision is in 'from' and then return a
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if (revision_id is not None and
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not _mod_revision.is_null(revision_id)):
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self.get_revision(revision_id)
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inter = InterRepository.get(source, self)
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return inter.fetch(revision_id=revision_id,
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find_ghosts=find_ghosts, fetch_spec=fetch_spec)
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def create_bundle(self, target, base, fileobj, format=None):
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return serializer.write_bundle(self, target, base, fileobj, format)
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def get_commit_builder(self, branch, parents, config, timestamp=None,
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timezone=None, committer=None, revprops=None,
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revision_id=None, lossy=False):
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"""Obtain a CommitBuilder for this repository.
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:param branch: Branch to commit to.
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:param parents: Revision ids of the parents of the new revision.
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:param config: Configuration to use.
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:param timestamp: Optional timestamp recorded for commit.
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:param timezone: Optional timezone for timestamp.
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:param committer: Optional committer to set for commit.
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:param revprops: Optional dictionary of revision properties.
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:param revision_id: Optional revision id.
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:param lossy: Whether to discard data that can not be natively
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represented, when pushing to a foreign VCS
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raise NotImplementedError(self.get_commit_builder)
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@only_raises(errors.LockNotHeld, errors.LockBroken)
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if (self.control_files._lock_count == 1 and
737
self.control_files._lock_mode == 'w'):
738
if self._write_group is not None:
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self.abort_write_group()
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self.control_files.unlock()
741
raise errors.BzrError(
742
'Must end write groups before releasing write locks.')
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self.control_files.unlock()
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if self.control_files._lock_count == 0:
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for repo in self._fallback_repositories:
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def clone(self, a_bzrdir, revision_id=None):
750
"""Clone this repository into a_bzrdir using the current format.
752
Currently no check is made that the format of this repository and
753
the bzrdir format are compatible. FIXME RBC 20060201.
755
:return: The newly created destination repository.
757
# TODO: deprecate after 0.16; cloning this with all its settings is
758
# probably not very useful -- mbp 20070423
759
dest_repo = self._create_sprouting_repo(a_bzrdir, shared=self.is_shared())
760
self.copy_content_into(dest_repo, revision_id)
763
def start_write_group(self):
764
"""Start a write group in the repository.
766
Write groups are used by repositories which do not have a 1:1 mapping
767
between file ids and backend store to manage the insertion of data from
768
both fetch and commit operations.
770
A write lock is required around the start_write_group/commit_write_group
771
for the support of lock-requiring repository formats.
773
One can only insert data into a repository inside a write group.
777
if not self.is_write_locked():
778
raise errors.NotWriteLocked(self)
779
if self._write_group:
780
raise errors.BzrError('already in a write group')
781
self._start_write_group()
782
# so we can detect unlock/relock - the write group is now entered.
783
self._write_group = self.get_transaction()
785
def _start_write_group(self):
786
"""Template method for per-repository write group startup.
788
This is called before the write group is considered to be
793
def sprout(self, to_bzrdir, revision_id=None):
794
"""Create a descendent repository for new development.
796
Unlike clone, this does not copy the settings of the repository.
798
dest_repo = self._create_sprouting_repo(to_bzrdir, shared=False)
799
dest_repo.fetch(self, revision_id=revision_id)
802
def _create_sprouting_repo(self, a_bzrdir, shared):
803
if not isinstance(a_bzrdir._format, self.bzrdir._format.__class__):
804
# use target default format.
805
dest_repo = a_bzrdir.create_repository()
807
# Most control formats need the repository to be specifically
808
# created, but on some old all-in-one formats it's not needed
810
dest_repo = self._format.initialize(a_bzrdir, shared=shared)
811
except errors.UninitializableFormat:
812
dest_repo = a_bzrdir.open_repository()
816
def has_revision(self, revision_id):
817
"""True if this repository has a copy of the revision."""
818
return revision_id in self.has_revisions((revision_id,))
821
def has_revisions(self, revision_ids):
822
"""Probe to find out the presence of multiple revisions.
824
:param revision_ids: An iterable of revision_ids.
825
:return: A set of the revision_ids that were present.
827
raise NotImplementedError(self.has_revisions)
830
def get_revision(self, revision_id):
831
"""Return the Revision object for a named revision."""
832
return self.get_revisions([revision_id])[0]
834
def get_revision_reconcile(self, revision_id):
835
"""'reconcile' helper routine that allows access to a revision always.
837
This variant of get_revision does not cross check the weave graph
838
against the revision one as get_revision does: but it should only
839
be used by reconcile, or reconcile-alike commands that are correcting
840
or testing the revision graph.
842
raise NotImplementedError(self.get_revision_reconcile)
844
def get_revisions(self, revision_ids):
845
"""Get many revisions at once.
847
Repositories that need to check data on every revision read should
848
subclass this method.
850
raise NotImplementedError(self.get_revisions)
852
def get_deltas_for_revisions(self, revisions, specific_fileids=None):
853
"""Produce a generator of revision deltas.
855
Note that the input is a sequence of REVISIONS, not revision_ids.
856
Trees will be held in memory until the generator exits.
857
Each delta is relative to the revision's lefthand predecessor.
859
:param specific_fileids: if not None, the result is filtered
860
so that only those file-ids, their parents and their
861
children are included.
863
# Get the revision-ids of interest
864
required_trees = set()
865
for revision in revisions:
866
required_trees.add(revision.revision_id)
867
required_trees.update(revision.parent_ids[:1])
869
# Get the matching filtered trees. Note that it's more
870
# efficient to pass filtered trees to changes_from() rather
871
# than doing the filtering afterwards. changes_from() could
872
# arguably do the filtering itself but it's path-based, not
873
# file-id based, so filtering before or afterwards is
875
if specific_fileids is None:
876
trees = dict((t.get_revision_id(), t) for
877
t in self.revision_trees(required_trees))
879
trees = dict((t.get_revision_id(), t) for
880
t in self._filtered_revision_trees(required_trees,
883
# Calculate the deltas
884
for revision in revisions:
885
if not revision.parent_ids:
886
old_tree = self.revision_tree(_mod_revision.NULL_REVISION)
888
old_tree = trees[revision.parent_ids[0]]
889
yield trees[revision.revision_id].changes_from(old_tree)
892
def get_revision_delta(self, revision_id, specific_fileids=None):
893
"""Return the delta for one revision.
895
The delta is relative to the left-hand predecessor of the
898
:param specific_fileids: if not None, the result is filtered
899
so that only those file-ids, their parents and their
900
children are included.
902
r = self.get_revision(revision_id)
903
return list(self.get_deltas_for_revisions([r],
904
specific_fileids=specific_fileids))[0]
907
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
908
signature = gpg_strategy.sign(plaintext)
909
self.add_signature_text(revision_id, signature)
911
def add_signature_text(self, revision_id, signature):
912
"""Store a signature text for a revision.
914
:param revision_id: Revision id of the revision
915
:param signature: Signature text.
917
raise NotImplementedError(self.add_signature_text)
919
def _find_parent_ids_of_revisions(self, revision_ids):
920
"""Find all parent ids that are mentioned in the revision graph.
922
:return: set of revisions that are parents of revision_ids which are
923
not part of revision_ids themselves
925
parent_map = self.get_parent_map(revision_ids)
927
map(parent_ids.update, parent_map.itervalues())
928
parent_ids.difference_update(revision_ids)
929
parent_ids.discard(_mod_revision.NULL_REVISION)
932
def iter_files_bytes(self, desired_files):
933
"""Iterate through file versions.
935
Files will not necessarily be returned in the order they occur in
936
desired_files. No specific order is guaranteed.
938
Yields pairs of identifier, bytes_iterator. identifier is an opaque
939
value supplied by the caller as part of desired_files. It should
940
uniquely identify the file version in the caller's context. (Examples:
941
an index number or a TreeTransform trans_id.)
943
:param desired_files: a list of (file_id, revision_id, identifier)
946
raise NotImplementedError(self.iter_files_bytes)
948
def get_rev_id_for_revno(self, revno, known_pair):
949
"""Return the revision id of a revno, given a later (revno, revid)
950
pair in the same history.
952
:return: if found (True, revid). If the available history ran out
953
before reaching the revno, then this returns
954
(False, (closest_revno, closest_revid)).
956
known_revno, known_revid = known_pair
957
partial_history = [known_revid]
958
distance_from_known = known_revno - revno
959
if distance_from_known < 0:
961
'requested revno (%d) is later than given known revno (%d)'
962
% (revno, known_revno))
965
self, partial_history, stop_index=distance_from_known)
966
except errors.RevisionNotPresent, err:
967
if err.revision_id == known_revid:
968
# The start revision (known_revid) wasn't found.
970
# This is a stacked repository with no fallbacks, or a there's a
971
# left-hand ghost. Either way, even though the revision named in
972
# the error isn't in this repo, we know it's the next step in this
974
partial_history.append(err.revision_id)
975
if len(partial_history) <= distance_from_known:
976
# Didn't find enough history to get a revid for the revno.
977
earliest_revno = known_revno - len(partial_history) + 1
978
return (False, (earliest_revno, partial_history[-1]))
979
if len(partial_history) - 1 > distance_from_known:
980
raise AssertionError('_iter_for_revno returned too much history')
981
return (True, partial_history[-1])
983
@symbol_versioning.deprecated_method(symbol_versioning.deprecated_in((2, 4, 0)))
984
def iter_reverse_revision_history(self, revision_id):
985
"""Iterate backwards through revision ids in the lefthand history
987
:param revision_id: The revision id to start with. All its lefthand
988
ancestors will be traversed.
990
graph = self.get_graph()
991
stop_revisions = (None, _mod_revision.NULL_REVISION)
992
return graph.iter_lefthand_ancestry(revision_id, stop_revisions)
995
"""Return True if this repository is flagged as a shared repository."""
996
raise NotImplementedError(self.is_shared)
999
def reconcile(self, other=None, thorough=False):
1000
"""Reconcile this repository."""
1001
from bzrlib.reconcile import RepoReconciler
1002
reconciler = RepoReconciler(self, thorough=thorough)
1003
reconciler.reconcile()
1006
def _refresh_data(self):
1007
"""Helper called from lock_* to ensure coherency with disk.
1009
The default implementation does nothing; it is however possible
1010
for repositories to maintain loaded indices across multiple locks
1011
by checking inside their implementation of this method to see
1012
whether their indices are still valid. This depends of course on
1013
the disk format being validatable in this manner. This method is
1014
also called by the refresh_data() public interface to cause a refresh
1015
to occur while in a write lock so that data inserted by a smart server
1016
push operation is visible on the client's instance of the physical
1021
def revision_tree(self, revision_id):
1022
"""Return Tree for a revision on this branch.
1024
`revision_id` may be NULL_REVISION for the empty tree revision.
1026
raise NotImplementedError(self.revision_tree)
1028
def revision_trees(self, revision_ids):
1029
"""Return Trees for revisions in this repository.
1031
:param revision_ids: a sequence of revision-ids;
1032
a revision-id may not be None or 'null:'
1034
raise NotImplementedError(self.revision_trees)
1037
@symbol_versioning.deprecated_method(
1038
symbol_versioning.deprecated_in((2, 4, 0)))
1039
def get_ancestry(self, revision_id, topo_sorted=True):
1040
"""Return a list of revision-ids integrated by a revision.
1042
The first element of the list is always None, indicating the origin
1043
revision. This might change when we have history horizons, or
1044
perhaps we should have a new API.
1046
This is topologically sorted.
1048
if 'evil' in debug.debug_flags:
1049
mutter_callsite(2, "get_ancestry is linear with history.")
1050
if _mod_revision.is_null(revision_id):
1052
if not self.has_revision(revision_id):
1053
raise errors.NoSuchRevision(self, revision_id)
1054
graph = self.get_graph()
1056
search = graph._make_breadth_first_searcher([revision_id])
1059
found, ghosts = search.next_with_ghosts()
1060
except StopIteration:
1063
if _mod_revision.NULL_REVISION in keys:
1064
keys.remove(_mod_revision.NULL_REVISION)
1066
parent_map = graph.get_parent_map(keys)
1067
keys = tsort.topo_sort(parent_map)
1068
return [None] + list(keys)
1070
def pack(self, hint=None, clean_obsolete_packs=False):
1071
"""Compress the data within the repository.
1073
This operation only makes sense for some repository types. For other
1074
types it should be a no-op that just returns.
1076
This stub method does not require a lock, but subclasses should use
1077
@needs_write_lock as this is a long running call it's reasonable to
1078
implicitly lock for the user.
1080
:param hint: If not supplied, the whole repository is packed.
1081
If supplied, the repository may use the hint parameter as a
1082
hint for the parts of the repository to pack. A hint can be
1083
obtained from the result of commit_write_group(). Out of
1084
date hints are simply ignored, because concurrent operations
1085
can obsolete them rapidly.
1087
:param clean_obsolete_packs: Clean obsolete packs immediately after
1091
def get_transaction(self):
1092
return self.control_files.get_transaction()
1094
def get_parent_map(self, revision_ids):
1095
"""See graph.StackedParentsProvider.get_parent_map"""
1096
raise NotImplementedError(self.get_parent_map)
1098
def _get_parent_map_no_fallbacks(self, revision_ids):
1099
"""Same as Repository.get_parent_map except doesn't query fallbacks."""
1100
# revisions index works in keys; this just works in revisions
1101
# therefore wrap and unwrap
1104
for revision_id in revision_ids:
1105
if revision_id == _mod_revision.NULL_REVISION:
1106
result[revision_id] = ()
1107
elif revision_id is None:
1108
raise ValueError('get_parent_map(None) is not valid')
1110
query_keys.append((revision_id ,))
1111
vf = self.revisions.without_fallbacks()
1112
for ((revision_id,), parent_keys) in \
1113
vf.get_parent_map(query_keys).iteritems():
1115
result[revision_id] = tuple([parent_revid
1116
for (parent_revid,) in parent_keys])
1118
result[revision_id] = (_mod_revision.NULL_REVISION,)
1121
def _make_parents_provider(self):
1122
if not self._format.supports_external_lookups:
1124
return graph.StackedParentsProvider(_LazyListJoin(
1125
[self._make_parents_provider_unstacked()],
1126
self._fallback_repositories))
1128
def _make_parents_provider_unstacked(self):
1129
return graph.CallableToParentsProviderAdapter(
1130
self._get_parent_map_no_fallbacks)
1133
def get_known_graph_ancestry(self, revision_ids):
1134
"""Return the known graph for a set of revision ids and their ancestors.
1136
raise NotImplementedError(self.get_known_graph_ancestry)
1138
def get_file_graph(self):
1139
"""Return the graph walker for files."""
1140
raise NotImplementedError(self.get_file_graph)
1142
def get_graph(self, other_repository=None):
1143
"""Return the graph walker for this repository format"""
1144
parents_provider = self._make_parents_provider()
1145
if (other_repository is not None and
1146
not self.has_same_location(other_repository)):
1147
parents_provider = graph.StackedParentsProvider(
1148
[parents_provider, other_repository._make_parents_provider()])
1149
return graph.Graph(parents_provider)
1151
def revision_ids_to_search_result(self, result_set):
1152
"""Convert a set of revision ids to a graph SearchResult."""
1153
result_parents = set()
1154
for parents in self.get_graph().get_parent_map(
1155
result_set).itervalues():
1156
result_parents.update(parents)
1157
included_keys = result_set.intersection(result_parents)
1158
start_keys = result_set.difference(included_keys)
1159
exclude_keys = result_parents.difference(result_set)
1160
result = graph.SearchResult(start_keys, exclude_keys,
1161
len(result_set), result_set)
1165
def set_make_working_trees(self, new_value):
1166
"""Set the policy flag for making working trees when creating branches.
1168
This only applies to branches that use this repository.
1170
The default is 'True'.
1171
:param new_value: True to restore the default, False to disable making
1174
raise NotImplementedError(self.set_make_working_trees)
1176
def make_working_trees(self):
1177
"""Returns the policy for making working trees on new branches."""
1178
raise NotImplementedError(self.make_working_trees)
1181
def sign_revision(self, revision_id, gpg_strategy):
1182
testament = _mod_testament.Testament.from_revision(self, revision_id)
1183
plaintext = testament.as_short_text()
1184
self.store_revision_signature(gpg_strategy, plaintext, revision_id)
1187
def verify_revision(self, revision_id, gpg_strategy):
1188
"""Verify the signature on a revision.
1190
:param revision_id: the revision to verify
1191
:gpg_strategy: the GPGStrategy object to used
1193
:return: gpg.SIGNATURE_VALID or a failed SIGNATURE_ value
1195
if not self.has_signature_for_revision_id(revision_id):
1196
return gpg.SIGNATURE_NOT_SIGNED, None
1197
signature = self.get_signature_text(revision_id)
1199
testament = _mod_testament.Testament.from_revision(self, revision_id)
1200
plaintext = testament.as_short_text()
1202
return gpg_strategy.verify(signature, plaintext)
1204
def has_signature_for_revision_id(self, revision_id):
1205
"""Query for a revision signature for revision_id in the repository."""
1206
raise NotImplementedError(self.has_signature_for_revision_id)
1208
def get_signature_text(self, revision_id):
1209
"""Return the text for a signature."""
1210
raise NotImplementedError(self.get_signature_text)
1212
def check(self, revision_ids=None, callback_refs=None, check_repo=True):
1213
"""Check consistency of all history of given revision_ids.
1215
Different repository implementations should override _check().
1217
:param revision_ids: A non-empty list of revision_ids whose ancestry
1218
will be checked. Typically the last revision_id of a branch.
1219
:param callback_refs: A dict of check-refs to resolve and callback
1220
the check/_check method on the items listed as wanting the ref.
1222
:param check_repo: If False do not check the repository contents, just
1223
calculate the data callback_refs requires and call them back.
1225
return self._check(revision_ids=revision_ids, callback_refs=callback_refs,
1226
check_repo=check_repo)
1228
def _check(self, revision_ids=None, callback_refs=None, check_repo=True):
1229
raise NotImplementedError(self.check)
1231
def _warn_if_deprecated(self, branch=None):
1232
if not self._format.is_deprecated():
1234
global _deprecation_warning_done
1235
if _deprecation_warning_done:
1239
conf = config.GlobalConfig()
1241
conf = branch.get_config()
1242
if conf.suppress_warning('format_deprecation'):
1244
warning("Format %s for %s is deprecated -"
1245
" please use 'bzr upgrade' to get better performance"
1246
% (self._format, self.bzrdir.transport.base))
1248
_deprecation_warning_done = True
1250
def supports_rich_root(self):
1251
return self._format.rich_root_data
1253
def _check_ascii_revisionid(self, revision_id, method):
1254
"""Private helper for ascii-only repositories."""
1255
# weave repositories refuse to store revisionids that are non-ascii.
1256
if revision_id is not None:
1257
# weaves require ascii revision ids.
1258
if isinstance(revision_id, unicode):
1260
revision_id.encode('ascii')
1261
except UnicodeEncodeError:
1262
raise errors.NonAsciiRevisionId(method, self)
1265
revision_id.decode('ascii')
1266
except UnicodeDecodeError:
1267
raise errors.NonAsciiRevisionId(method, self)
1270
class MetaDirRepository(Repository):
1271
"""Repositories in the new meta-dir layout.
1273
:ivar _transport: Transport for access to repository control files,
1274
typically pointing to .bzr/repository.
1277
def __init__(self, _format, a_bzrdir, control_files):
1278
super(MetaDirRepository, self).__init__(_format, a_bzrdir, control_files)
1279
self._transport = control_files._transport
1281
def is_shared(self):
1282
"""Return True if this repository is flagged as a shared repository."""
1283
return self._transport.has('shared-storage')
1286
def set_make_working_trees(self, new_value):
1287
"""Set the policy flag for making working trees when creating branches.
1289
This only applies to branches that use this repository.
1291
The default is 'True'.
1292
:param new_value: True to restore the default, False to disable making
1297
self._transport.delete('no-working-trees')
1298
except errors.NoSuchFile:
1301
self._transport.put_bytes('no-working-trees', '',
1302
mode=self.bzrdir._get_file_mode())
1304
def make_working_trees(self):
1305
"""Returns the policy for making working trees on new branches."""
1306
return not self._transport.has('no-working-trees')
1309
class RepositoryFormatRegistry(controldir.ControlComponentFormatRegistry):
1310
"""Repository format registry."""
1312
def get_default(self):
1313
"""Return the current default format."""
1314
from bzrlib import bzrdir
1315
return bzrdir.format_registry.make_bzrdir('default').repository_format
1318
network_format_registry = registry.FormatRegistry()
1319
"""Registry of formats indexed by their network name.
1321
The network name for a repository format is an identifier that can be used when
1322
referring to formats with smart server operations. See
1323
RepositoryFormat.network_name() for more detail.
1327
format_registry = RepositoryFormatRegistry(network_format_registry)
1328
"""Registry of formats, indexed by their BzrDirMetaFormat format string.
1330
This can contain either format instances themselves, or classes/factories that
1331
can be called to obtain one.
1335
#####################################################################
1336
# Repository Formats
1338
class RepositoryFormat(controldir.ControlComponentFormat):
1339
"""A repository format.
1341
Formats provide four things:
1342
* An initialization routine to construct repository data on disk.
1343
* a optional format string which is used when the BzrDir supports
1345
* an open routine which returns a Repository instance.
1346
* A network name for referring to the format in smart server RPC
1349
There is one and only one Format subclass for each on-disk format. But
1350
there can be one Repository subclass that is used for several different
1351
formats. The _format attribute on a Repository instance can be used to
1352
determine the disk format.
1354
Formats are placed in a registry by their format string for reference
1355
during opening. These should be subclasses of RepositoryFormat for
1358
Once a format is deprecated, just deprecate the initialize and open
1359
methods on the format class. Do not deprecate the object, as the
1360
object may be created even when a repository instance hasn't been
1363
Common instance attributes:
1364
_matchingbzrdir - the bzrdir format that the repository format was
1365
originally written to work with. This can be used if manually
1366
constructing a bzrdir and repository, or more commonly for test suite
1370
# Set to True or False in derived classes. True indicates that the format
1371
# supports ghosts gracefully.
1372
supports_ghosts = None
1373
# Can this repository be given external locations to lookup additional
1374
# data. Set to True or False in derived classes.
1375
supports_external_lookups = None
1376
# Does this format support CHK bytestring lookups. Set to True or False in
1378
supports_chks = None
1379
# Should fetch trigger a reconcile after the fetch? Only needed for
1380
# some repository formats that can suffer internal inconsistencies.
1381
_fetch_reconcile = False
1382
# Does this format have < O(tree_size) delta generation. Used to hint what
1383
# code path for commit, amongst other things.
1385
# Does doing a pack operation compress data? Useful for the pack UI command
1386
# (so if there is one pack, the operation can still proceed because it may
1387
# help), and for fetching when data won't have come from the same
1389
pack_compresses = False
1390
# Does the repository storage understand references to trees?
1391
supports_tree_reference = None
1392
# Is the format experimental ?
1393
experimental = False
1394
# Does this repository format escape funky characters, or does it create
1395
# files with similar names as the versioned files in its contents on disk
1397
supports_funky_characters = None
1398
# Does this repository format support leaving locks?
1399
supports_leaving_lock = None
1400
# Does this format support the full VersionedFiles interface?
1401
supports_full_versioned_files = None
1402
# Does this format support signing revision signatures?
1403
supports_revision_signatures = True
1404
# Can the revision graph have incorrect parents?
1405
revision_graph_can_have_wrong_parents = None
1406
# Does this format support rich root data?
1407
rich_root_data = None
1408
# Does this format support explicitly versioned directories?
1409
supports_versioned_directories = None
1410
# Can other repositories be nested into one of this format?
1411
supports_nesting_repositories = None
1414
return "%s()" % self.__class__.__name__
1416
def __eq__(self, other):
1417
# format objects are generally stateless
1418
return isinstance(other, self.__class__)
1420
def __ne__(self, other):
1421
return not self == other
1424
def find_format(klass, a_bzrdir):
1425
"""Return the format for the repository object in a_bzrdir.
1427
This is used by bzr native formats that have a "format" file in
1428
the repository. Other methods may be used by different types of
1432
transport = a_bzrdir.get_repository_transport(None)
1433
format_string = transport.get_bytes("format")
1434
return format_registry.get(format_string)
1435
except errors.NoSuchFile:
1436
raise errors.NoRepositoryPresent(a_bzrdir)
1438
raise errors.UnknownFormatError(format=format_string,
1442
@symbol_versioning.deprecated_method(symbol_versioning.deprecated_in((2, 4, 0)))
1443
def register_format(klass, format):
1444
format_registry.register(format)
1447
@symbol_versioning.deprecated_method(symbol_versioning.deprecated_in((2, 4, 0)))
1448
def unregister_format(klass, format):
1449
format_registry.remove(format)
1452
@symbol_versioning.deprecated_method(symbol_versioning.deprecated_in((2, 4, 0)))
1453
def get_default_format(klass):
1454
"""Return the current default format."""
1455
return format_registry.get_default()
1457
def get_format_string(self):
1458
"""Return the ASCII format string that identifies this format.
1460
Note that in pre format ?? repositories the format string is
1461
not permitted nor written to disk.
1463
raise NotImplementedError(self.get_format_string)
1465
def get_format_description(self):
1466
"""Return the short description for this format."""
1467
raise NotImplementedError(self.get_format_description)
1469
def initialize(self, a_bzrdir, shared=False):
1470
"""Initialize a repository of this format in a_bzrdir.
1472
:param a_bzrdir: The bzrdir to put the new repository in it.
1473
:param shared: The repository should be initialized as a sharable one.
1474
:returns: The new repository object.
1476
This may raise UninitializableFormat if shared repository are not
1477
compatible the a_bzrdir.
1479
raise NotImplementedError(self.initialize)
1481
def is_supported(self):
1482
"""Is this format supported?
1484
Supported formats must be initializable and openable.
1485
Unsupported formats may not support initialization or committing or
1486
some other features depending on the reason for not being supported.
1490
def is_deprecated(self):
1491
"""Is this format deprecated?
1493
Deprecated formats may trigger a user-visible warning recommending
1494
the user to upgrade. They are still fully supported.
1498
def network_name(self):
1499
"""A simple byte string uniquely identifying this format for RPC calls.
1501
MetaDir repository formats use their disk format string to identify the
1502
repository over the wire. All in one formats such as bzr < 0.8, and
1503
foreign formats like svn/git and hg should use some marker which is
1504
unique and immutable.
1506
raise NotImplementedError(self.network_name)
1508
def check_conversion_target(self, target_format):
1509
if self.rich_root_data and not target_format.rich_root_data:
1510
raise errors.BadConversionTarget(
1511
'Does not support rich root data.', target_format,
1513
if (self.supports_tree_reference and
1514
not getattr(target_format, 'supports_tree_reference', False)):
1515
raise errors.BadConversionTarget(
1516
'Does not support nested trees', target_format,
1519
def open(self, a_bzrdir, _found=False):
1520
"""Return an instance of this format for the bzrdir a_bzrdir.
1522
_found is a private parameter, do not use it.
1524
raise NotImplementedError(self.open)
1526
def _run_post_repo_init_hooks(self, repository, a_bzrdir, shared):
1527
from bzrlib.bzrdir import BzrDir, RepoInitHookParams
1528
hooks = BzrDir.hooks['post_repo_init']
1531
params = RepoInitHookParams(repository, self, a_bzrdir, shared)
1536
class MetaDirRepositoryFormat(RepositoryFormat):
1537
"""Common base class for the new repositories using the metadir layout."""
1539
rich_root_data = False
1540
supports_tree_reference = False
1541
supports_external_lookups = False
1542
supports_leaving_lock = True
1543
supports_nesting_repositories = True
1546
def _matchingbzrdir(self):
1547
matching = bzrdir.BzrDirMetaFormat1()
1548
matching.repository_format = self
1552
super(MetaDirRepositoryFormat, self).__init__()
1554
def _create_control_files(self, a_bzrdir):
1555
"""Create the required files and the initial control_files object."""
1556
# FIXME: RBC 20060125 don't peek under the covers
1557
# NB: no need to escape relative paths that are url safe.
1558
repository_transport = a_bzrdir.get_repository_transport(self)
1559
control_files = lockable_files.LockableFiles(repository_transport,
1560
'lock', lockdir.LockDir)
1561
control_files.create_lock()
1562
return control_files
1564
def _upload_blank_content(self, a_bzrdir, dirs, files, utf8_files, shared):
1565
"""Upload the initial blank content."""
1566
control_files = self._create_control_files(a_bzrdir)
1567
control_files.lock_write()
1568
transport = control_files._transport
1570
utf8_files += [('shared-storage', '')]
1572
transport.mkdir_multi(dirs, mode=a_bzrdir._get_dir_mode())
1573
for (filename, content_stream) in files:
1574
transport.put_file(filename, content_stream,
1575
mode=a_bzrdir._get_file_mode())
1576
for (filename, content_bytes) in utf8_files:
1577
transport.put_bytes_non_atomic(filename, content_bytes,
1578
mode=a_bzrdir._get_file_mode())
1580
control_files.unlock()
1582
def network_name(self):
1583
"""Metadir formats have matching disk and network format strings."""
1584
return self.get_format_string()
1587
# formats which have no format string are not discoverable or independently
1588
# creatable on disk, so are not registered in format_registry. They're
1589
# all in bzrlib.repofmt.knitreponow. When an instance of one of these is
1590
# needed, it's constructed directly by the BzrDir. Non-native formats where
1591
# the repository is not separately opened are similar.
1593
format_registry.register_lazy(
1594
'Bazaar-NG Knit Repository Format 1',
1595
'bzrlib.repofmt.knitrepo',
1596
'RepositoryFormatKnit1',
1599
format_registry.register_lazy(
1600
'Bazaar Knit Repository Format 3 (bzr 0.15)\n',
1601
'bzrlib.repofmt.knitrepo',
1602
'RepositoryFormatKnit3',
1605
format_registry.register_lazy(
1606
'Bazaar Knit Repository Format 4 (bzr 1.0)\n',
1607
'bzrlib.repofmt.knitrepo',
1608
'RepositoryFormatKnit4',
1611
# Pack-based formats. There is one format for pre-subtrees, and one for
1612
# post-subtrees to allow ease of testing.
1613
# NOTE: These are experimental in 0.92. Stable in 1.0 and above
1614
format_registry.register_lazy(
1615
'Bazaar pack repository format 1 (needs bzr 0.92)\n',
1616
'bzrlib.repofmt.knitpack_repo',
1617
'RepositoryFormatKnitPack1',
1619
format_registry.register_lazy(
1620
'Bazaar pack repository format 1 with subtree support (needs bzr 0.92)\n',
1621
'bzrlib.repofmt.knitpack_repo',
1622
'RepositoryFormatKnitPack3',
1624
format_registry.register_lazy(
1625
'Bazaar pack repository format 1 with rich root (needs bzr 1.0)\n',
1626
'bzrlib.repofmt.knitpack_repo',
1627
'RepositoryFormatKnitPack4',
1629
format_registry.register_lazy(
1630
'Bazaar RepositoryFormatKnitPack5 (bzr 1.6)\n',
1631
'bzrlib.repofmt.knitpack_repo',
1632
'RepositoryFormatKnitPack5',
1634
format_registry.register_lazy(
1635
'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6.1)\n',
1636
'bzrlib.repofmt.knitpack_repo',
1637
'RepositoryFormatKnitPack5RichRoot',
1639
format_registry.register_lazy(
1640
'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6)\n',
1641
'bzrlib.repofmt.knitpack_repo',
1642
'RepositoryFormatKnitPack5RichRootBroken',
1644
format_registry.register_lazy(
1645
'Bazaar RepositoryFormatKnitPack6 (bzr 1.9)\n',
1646
'bzrlib.repofmt.knitpack_repo',
1647
'RepositoryFormatKnitPack6',
1649
format_registry.register_lazy(
1650
'Bazaar RepositoryFormatKnitPack6RichRoot (bzr 1.9)\n',
1651
'bzrlib.repofmt.knitpack_repo',
1652
'RepositoryFormatKnitPack6RichRoot',
1654
format_registry.register_lazy(
1655
'Bazaar repository format 2a (needs bzr 1.16 or later)\n',
1656
'bzrlib.repofmt.groupcompress_repo',
1657
'RepositoryFormat2a',
1660
# Development formats.
1661
# Check their docstrings to see if/when they are obsolete.
1662
format_registry.register_lazy(
1663
("Bazaar development format 2 with subtree support "
1664
"(needs bzr.dev from before 1.8)\n"),
1665
'bzrlib.repofmt.knitpack_repo',
1666
'RepositoryFormatPackDevelopment2Subtree',
1668
format_registry.register_lazy(
1669
'Bazaar development format 8\n',
1670
'bzrlib.repofmt.groupcompress_repo',
1671
'RepositoryFormat2aSubtree',
1675
class InterRepository(InterObject):
1676
"""This class represents operations taking place between two repositories.
1678
Its instances have methods like copy_content and fetch, and contain
1679
references to the source and target repositories these operations can be
1682
Often we will provide convenience methods on 'repository' which carry out
1683
operations with another repository - they will always forward to
1684
InterRepository.get(other).method_name(parameters).
1688
"""The available optimised InterRepository types."""
1691
def copy_content(self, revision_id=None):
1692
"""Make a complete copy of the content in self into destination.
1694
This is a destructive operation! Do not use it on existing
1697
:param revision_id: Only copy the content needed to construct
1698
revision_id and its parents.
1701
self.target.set_make_working_trees(self.source.make_working_trees())
1702
except NotImplementedError:
1704
self.target.fetch(self.source, revision_id=revision_id)
1707
def fetch(self, revision_id=None, find_ghosts=False,
1709
"""Fetch the content required to construct revision_id.
1711
The content is copied from self.source to self.target.
1713
:param revision_id: if None all content is copied, if NULL_REVISION no
1717
raise NotImplementedError(self.fetch)
1720
def search_missing_revision_ids(self,
1721
revision_id=symbol_versioning.DEPRECATED_PARAMETER,
1722
find_ghosts=True, revision_ids=None, if_present_ids=None,
1724
"""Return the revision ids that source has that target does not.
1726
:param revision_id: only return revision ids included by this
1728
:param revision_ids: return revision ids included by these
1729
revision_ids. NoSuchRevision will be raised if any of these
1730
revisions are not present.
1731
:param if_present_ids: like revision_ids, but will not cause
1732
NoSuchRevision if any of these are absent, instead they will simply
1733
not be in the result. This is useful for e.g. finding revisions
1734
to fetch for tags, which may reference absent revisions.
1735
:param find_ghosts: If True find missing revisions in deep history
1736
rather than just finding the surface difference.
1737
:param limit: Maximum number of revisions to return, topologically
1739
:return: A bzrlib.graph.SearchResult.
1741
raise NotImplementedError(self.search_missing_revision_ids)
1744
def _same_model(source, target):
1745
"""True if source and target have the same data representation.
1747
Note: this is always called on the base class; overriding it in a
1748
subclass will have no effect.
1751
InterRepository._assert_same_model(source, target)
1753
except errors.IncompatibleRepositories, e:
1757
def _assert_same_model(source, target):
1758
"""Raise an exception if two repositories do not use the same model.
1760
if source.supports_rich_root() != target.supports_rich_root():
1761
raise errors.IncompatibleRepositories(source, target,
1762
"different rich-root support")
1763
if source._serializer != target._serializer:
1764
raise errors.IncompatibleRepositories(source, target,
1765
"different serializers")
1768
class CopyConverter(object):
1769
"""A repository conversion tool which just performs a copy of the content.
1771
This is slow but quite reliable.
1774
def __init__(self, target_format):
1775
"""Create a CopyConverter.
1777
:param target_format: The format the resulting repository should be.
1779
self.target_format = target_format
1781
def convert(self, repo, pb):
1782
"""Perform the conversion of to_convert, giving feedback via pb.
1784
:param to_convert: The disk object to convert.
1785
:param pb: a progress bar to use for progress information.
1787
pb = ui.ui_factory.nested_progress_bar()
1790
# this is only useful with metadir layouts - separated repo content.
1791
# trigger an assertion if not such
1792
repo._format.get_format_string()
1793
self.repo_dir = repo.bzrdir
1794
pb.update(gettext('Moving repository to repository.backup'))
1795
self.repo_dir.transport.move('repository', 'repository.backup')
1796
backup_transport = self.repo_dir.transport.clone('repository.backup')
1797
repo._format.check_conversion_target(self.target_format)
1798
self.source_repo = repo._format.open(self.repo_dir,
1800
_override_transport=backup_transport)
1801
pb.update(gettext('Creating new repository'))
1802
converted = self.target_format.initialize(self.repo_dir,
1803
self.source_repo.is_shared())
1804
converted.lock_write()
1806
pb.update(gettext('Copying content'))
1807
self.source_repo.copy_content_into(converted)
1810
pb.update(gettext('Deleting old repository content'))
1811
self.repo_dir.transport.delete_tree('repository.backup')
1812
ui.ui_factory.note(gettext('repository converted'))
1816
def _strip_NULL_ghosts(revision_graph):
1817
"""Also don't use this. more compatibility code for unmigrated clients."""
1818
# Filter ghosts, and null:
1819
if _mod_revision.NULL_REVISION in revision_graph:
1820
del revision_graph[_mod_revision.NULL_REVISION]
1821
for key, parents in revision_graph.items():
1822
revision_graph[key] = tuple(parent for parent in parents if parent
1824
return revision_graph
1827
def _iter_for_revno(repo, partial_history_cache, stop_index=None,
1828
stop_revision=None):
1829
"""Extend the partial history to include a given index
1831
If a stop_index is supplied, stop when that index has been reached.
1832
If a stop_revision is supplied, stop when that revision is
1833
encountered. Otherwise, stop when the beginning of history is
1836
:param stop_index: The index which should be present. When it is
1837
present, history extension will stop.
1838
:param stop_revision: The revision id which should be present. When
1839
it is encountered, history extension will stop.
1841
start_revision = partial_history_cache[-1]
1842
graph = repo.get_graph()
1843
iterator = graph.iter_lefthand_ancestry(start_revision,
1844
(_mod_revision.NULL_REVISION,))
1846
# skip the last revision in the list
1849
if (stop_index is not None and
1850
len(partial_history_cache) > stop_index):
1852
if partial_history_cache[-1] == stop_revision:
1854
revision_id = iterator.next()
1855
partial_history_cache.append(revision_id)
1856
except StopIteration:
1861
class _LazyListJoin(object):
1862
"""An iterable yielding the contents of many lists as one list.
1864
Each iterator made from this will reflect the current contents of the lists
1865
at the time the iterator is made.
1867
This is used by Repository's _make_parents_provider implementation so that
1870
pp = repo._make_parents_provider() # uses a list of fallback repos
1871
pp.add_fallback_repository(other_repo) # appends to that list
1872
result = pp.get_parent_map(...)
1873
# The result will include revs from other_repo
1876
def __init__(self, *list_parts):
1877
self.list_parts = list_parts
1881
for list_part in self.list_parts:
1882
full_list.extend(list_part)
1883
return iter(full_list)
1886
return "%s.%s(%s)" % (self.__module__, self.__class__.__name__,
added
removed
bzrlib/repository.py
